87869363785956 has 81 divisors (see below), whose sum is σ = 222495753204361. Its totient is φ = 29239562754624.

The previous prime is 87869363785933. The next prime is 87869363786027. The reversal of 87869363785956 is 65958736396878.

The square root of 87869363785956 is 9373866.

It is a perfect power (a square), and thus also a powerful number.

87869363785956 is a `hidden beast` number, since 8 + 7 + 8 + 6 + 9 + 3 + 6 + 3 + 7 + 8 + 595 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 81429868822500 + 6439494963456 = 9023850^2 + 2537616^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48200418061 + ... + 48200419883.

Almost surely, 2^{87869363785956} is an apocalyptic number.

87869363785956 is the 9373866-th square number.

It is an amenable number.

87869363785956 is an abundant number, since it is smaller than the sum of its proper divisors (134626389418405).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87869363785956 is an frugal number, since it uses more digits than its factorization.

87869363785956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370 (or 2685 counting only the distinct ones).

The product of its digits is 98761420800, while the sum is 90.

The spelling of 87869363785956 in words is "eighty-seven trillion, eight hundred sixty-nine billion, three hundred sixty-three million, seven hundred eighty-five thousand, nine hundred fifty-six".